有的时候我们上传东西不想传到web目录而是ftp服务器，这样可以不占用服务器宝贵空间，以前发过一个tips中提到利用ftpsupport.dll操作ftp的方法，可能当时没有说清楚，网友要求给个清楚的例子，就随便写了个文件可以上传，下载，删除ftp上的文件：
首先，dll 点击 这里 下载，别忘记给项目添加引用
test.aspx:
<%@ Page language="c#" Codebehind="Test.aspx.cs" AutoEventWireup="false" Inherits="FtpTest.Test" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
<HEAD>
<title>Test</title>
<meta name="GENERATOR" Content="Microsoft Visual Studio .NET 7.1">
<meta name="CODE_LANGUAGE" Content="C#">
<meta name="vs_defaultClientScript" content="JavaScript">
<meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5">
</HEAD>
<body>
<form id="Form1" method="post" runat="server">
<input type="file" id="file1" runat="server">
<asp:TextBox id="tb_Dir" runat="server" Width="80px">\</asp:TextBox>
<asp:Button id="btn_upload" runat="server" Text="Upload"></asp:Button>
<asp:DataGrid id="DataGrid1" runat="server" AutoGenerateColumns="False" CellPadding="3" DataKeyField="AutoID">
<ItemStyle Font-Size="9pt" Font-Names="Verdana"></ItemStyle>
<HeaderStyle Font-Size="9pt" Font-Names="Verdana" Font-Bold="True"></HeaderStyle>
<Columns>
<asp:BoundColumn DataField="FileName" HeaderText="FileName"></asp:BoundColumn>
<asp:BoundColumn DataField="FilePath" HeaderText="FilePath"></asp:BoundColumn>
<asp:BoundColumn DataField="FileDownloadName" HeaderText="FileDownloadName"></asp:BoundColumn>
<asp:BoundColumn DataField="FileSize" HeaderText="FileSize(K)"></asp:BoundColumn>
<asp:BoundColumn DataField="UploadTime" HeaderText="UploadTime"></asp:BoundColumn>
<asp:ButtonColumn Text="DOWNLOAD" HeaderText="Download" CommandName="Download"></asp:ButtonColumn>
<asp:ButtonColumn Text="DEL" HeaderText="Del" CommandName="Del"></asp:ButtonColumn>
</Columns>
</asp:DataGrid>
</form>
</body>
</HTML>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
<HEAD>
<title>Test</title>
<meta name="GENERATOR" Content="Microsoft Visual Studio .NET 7.1">
<meta name="CODE_LANGUAGE" Content="C#">
<meta name="vs_defaultClientScript" content="JavaScript">
<meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5">
</HEAD>
<body>
<form id="Form1" method="post" runat="server">
<input type="file" id="file1" runat="server">
<asp:TextBox id="tb_Dir" runat="server" Width="80px">\</asp:TextBox>
<asp:Button id="btn_upload" runat="server" Text="Upload"></asp:Button>
<asp:DataGrid id="DataGrid1" runat="server" AutoGenerateColumns="False" CellPadding="3" DataKeyField="AutoID">
<ItemStyle Font-Size="9pt" Font-Names="Verdana"></ItemStyle>
<HeaderStyle Font-Size="9pt" Font-Names="Verdana" Font-Bold="True"></HeaderStyle>
<Columns>
<asp:BoundColumn DataField="FileName" HeaderText="FileName"></asp:BoundColumn>
<asp:BoundColumn DataField="FilePath" HeaderText="FilePath"></asp:BoundColumn>
<asp:BoundColumn DataField="FileDownloadName" HeaderText="FileDownloadName"></asp:BoundColumn>
<asp:BoundColumn DataField="FileSize" HeaderText="FileSize(K)"></asp:BoundColumn>
<asp:BoundColumn DataField="UploadTime" HeaderText="UploadTime"></asp:BoundColumn>
<asp:ButtonColumn Text="DOWNLOAD" HeaderText="Download" CommandName="Download"></asp:ButtonColumn>
<asp:ButtonColumn Text="DEL" HeaderText="Del" CommandName="Del"></asp:ButtonColumn>
</Columns>
</asp:DataGrid>
</form>
</body>
</HTML>
test.aspx.cs:
using System;
using System.Collections;
using System.Configuration;
using System.ComponentModel;
using System.Data;
using System.Data.SqlClient;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
namespace FtpTest
{
/// <summary>
/// Test 的摘要说明。
/// </summary>
public class Test : System.Web.UI.Page
{
protected System.Web.UI.WebControls.Button btn_upload;
protected System.Web.UI.HtmlControls.HtmlInputFile file1;
protected System.Web.UI.WebControls.TextBox tb_Dir;
protected System.Web.UI.WebControls.DataGrid DataGrid1;
private void Page_Load(object sender, System.EventArgs e)
{
if(!IsPostBack)
{
SetBind();
}
}
#region Web 窗体设计器生成的代码
override protected void OnInit(EventArgs e)
{
//
// CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
//
InitializeComponent();
base.OnInit(e);
}
/// <summary>
/// 设计器支持所需的方法 - 不要使用代码编辑器修改
/// 此方法的内容。
/// </summary>
private void InitializeComponent()
{
this.btn_upload.Click += new System.EventHandler(this.btn_upload_Click);
this.DataGrid1.ItemCommand += new System.Web.UI.WebControls.DataGridCommandEventHandler(this.DataGrid1_ItemCommand);
this.Load += new System.EventHandler(this.Page_Load);
}
#endregion
private void SetBind()
{
SqlConnection conn=new SqlConnection(ConfigurationSettings.AppSettings["strconn"]);
SqlDataAdapter da=new SqlDataAdapter("select * from FTP order by FilePath",conn);
DataSet ds=new DataSet();
da.Fill(ds);
this.DataGrid1.DataSource=ds;
this.DataGrid1.DataBind();
}
private void btn_upload_Click(object sender, System.EventArgs e)
{
FtpClass ftp=new FtpClass();
string filedownloadname=ftp.FtpUpload(this.file1.PostedFile,this.tb_Dir.Text);
string [] arrs=file1.PostedFile.FileName.Split('\\');
string filename=arrs[arrs.Length-1];
SqlConnection conn=new SqlConnection(ConfigurationSettings.AppSettings["strconn"]);
SqlCommand comm=new SqlCommand("insert into FTP (FileName,FileDownloadName,FilePath,FileSize,UploadTime) values (@filename,@filedownloadname,@filepath,@filesize,@uploadtime)",conn);
SqlParameter parm1=new SqlParameter("@filename",SqlDbType.NVarChar,50);
parm1.Value=filename;
SqlParameter parm2=new SqlParameter("@filedownloadname",SqlDbType.NVarChar,50);
parm2.Value=filedownloadname;
SqlParameter parm3=new SqlParameter("@filepath",SqlDbType.NVarChar,50);
parm3.Value=this.tb_Dir.Text;
SqlParameter parm4=new SqlParameter("@filesize",SqlDbType.Int);
parm4.Value=this.file1.PostedFile.ContentLength/1024;
SqlParameter parm5=new SqlParameter("@uploadtime",SqlDbType.DateTime);
parm5.Value=DateTime.Now.ToString();
comm.Parameters.Add(parm1);
comm.Parameters.Add(parm2);
comm.Parameters.Add(parm3);
comm.Parameters.Add(parm4);
comm.Parameters.Add(parm5);
conn.Open();
comm.ExecuteNonQuery();
conn.Close();
SetBind();
}
private void DataGrid1_ItemCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
{
if(e.CommandName=="Del")
{
FtpClass ftp=new FtpClass();
ftp.FileDel(e.Item.Cells[2].Text,e.Item.Cells[1].Text);
SqlConnection conn=new SqlConnection(ConfigurationSettings.AppSettings["strconn"]);
SqlCommand comm=new SqlCommand("delete from FTP where AutoID=@autoid",conn);
SqlParameter parm1=new SqlParameter("@autoid",SqlDbType.NVarChar,50);
parm1.Value=this.DataGrid1.DataKeys[e.Item.ItemIndex];
comm.Parameters.Add(parm1);
conn.Open();
comm.ExecuteNonQuery();
conn.Close();
SetBind();
}
if(e.CommandName=="Download")
{
FtpClass ftp=new FtpClass();
ftp.FtpDownload(HttpContext.Current,e.Item.Cells[2].Text,e.Item.Cells[1].Text);
}
}
}
}
using System.Collections;
using System.Configuration;
using System.ComponentModel;
using System.Data;
using System.Data.SqlClient;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
namespace FtpTest
{
/// <summary>
/// Test 的摘要说明。
/// </summary>
public class Test : System.Web.UI.Page
{
protected System.Web.UI.WebControls.Button btn_upload;
protected System.Web.UI.HtmlControls.HtmlInputFile file1;
protected System.Web.UI.WebControls.TextBox tb_Dir;
protected System.Web.UI.WebControls.DataGrid DataGrid1;
private void Page_Load(object sender, System.EventArgs e)
{
if(!IsPostBack)
{
SetBind();
}
}
#region Web 窗体设计器生成的代码
override protected void OnInit(EventArgs e)
{
//
// CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
//
InitializeComponent();
base.OnInit(e);
}
/// <summary>
/// 设计器支持所需的方法 - 不要使用代码编辑器修改
/// 此方法的内容。
/// </summary>
private void InitializeComponent()
{
this.btn_upload.Click += new System.EventHandler(this.btn_upload_Click);
this.DataGrid1.ItemCommand += new System.Web.UI.WebControls.DataGridCommandEventHandler(this.DataGrid1_ItemCommand);
this.Load += new System.EventHandler(this.Page_Load);
}
#endregion
private void SetBind()
{
SqlConnection conn=new SqlConnection(ConfigurationSettings.AppSettings["strconn"]);
SqlDataAdapter da=new SqlDataAdapter("select * from FTP order by FilePath",conn);
DataSet ds=new DataSet();
da.Fill(ds);
this.DataGrid1.DataSource=ds;
this.DataGrid1.DataBind();
}
private void btn_upload_Click(object sender, System.EventArgs e)
{
FtpClass ftp=new FtpClass();
string filedownloadname=ftp.FtpUpload(this.file1.PostedFile,this.tb_Dir.Text);
string [] arrs=file1.PostedFile.FileName.Split('\\');
string filename=arrs[arrs.Length-1];
SqlConnection conn=new SqlConnection(ConfigurationSettings.AppSettings["strconn"]);
SqlCommand comm=new SqlCommand("insert into FTP (FileName,FileDownloadName,FilePath,FileSize,UploadTime) values (@filename,@filedownloadname,@filepath,@filesize,@uploadtime)",conn);
SqlParameter parm1=new SqlParameter("@filename",SqlDbType.NVarChar,50);
parm1.Value=filename;
SqlParameter parm2=new SqlParameter("@filedownloadname",SqlDbType.NVarChar,50);
parm2.Value=filedownloadname;
SqlParameter parm3=new SqlParameter("@filepath",SqlDbType.NVarChar,50);
parm3.Value=this.tb_Dir.Text;
SqlParameter parm4=new SqlParameter("@filesize",SqlDbType.Int);
parm4.Value=this.file1.PostedFile.ContentLength/1024;
SqlParameter parm5=new SqlParameter("@uploadtime",SqlDbType.DateTime);
parm5.Value=DateTime.Now.ToString();
comm.Parameters.Add(parm1);
comm.Parameters.Add(parm2);
comm.Parameters.Add(parm3);
comm.Parameters.Add(parm4);
comm.Parameters.Add(parm5);
conn.Open();
comm.ExecuteNonQuery();
conn.Close();
SetBind();
}
private void DataGrid1_ItemCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
{
if(e.CommandName=="Del")
{
FtpClass ftp=new FtpClass();
ftp.FileDel(e.Item.Cells[2].Text,e.Item.Cells[1].Text);
SqlConnection conn=new SqlConnection(ConfigurationSettings.AppSettings["strconn"]);
SqlCommand comm=new SqlCommand("delete from FTP where AutoID=@autoid",conn);
SqlParameter parm1=new SqlParameter("@autoid",SqlDbType.NVarChar,50);
parm1.Value=this.DataGrid1.DataKeys[e.Item.ItemIndex];
comm.Parameters.Add(parm1);
conn.Open();
comm.ExecuteNonQuery();
conn.Close();
SetBind();
}
if(e.CommandName=="Download")
{
FtpClass ftp=new FtpClass();
ftp.FtpDownload(HttpContext.Current,e.Item.Cells[2].Text,e.Item.Cells[1].Text);
}
}
}
}